(19) United States
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`(12) Patent Application Publication (10) Pub. No.: US 2004/0198369 A1
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`Kwak et al.
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`(43) Pub. Date:
`Oct. 7, 2004
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`US 20040198369A1
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`(54) METHOD FOR DETERMINING DATA RATE
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`OF USER EQUIPMENT SUPPORTING
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`EUDCH SERVICE
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`(75)
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`Inventors: Yong-Jun Kwak, Yongin-si (KR);
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`Sung-Ho Choi, Suwon-si (KR); Ju-Ho
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`Lee, Suwon-si (KR); Youn-Hyoung
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`Heo, Suwon-si (KR)
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`Correspondence Address:
`Paul J. Farrell
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`DILWORTH & BARRESE, LLP
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`333 Earle Ovington Blvd.
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`Uniondale, NY 11553 (US)
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`(73) Assignee: SAMSUNG ELECTRONICS CO.,
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`LTD., GYEONGGI-DO (KR)
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`(21) Appl. No.:
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`10/751,629
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`(22)
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`Filed:
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`Jan. 5, 2004
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`(30)
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`Foreign Application Priority Data
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`Jan. 4, 2003
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`Dec. 18, 2003
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`......................................... .. 466-2003
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`..................................... .. 93243-2003
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`Publication Classification
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`(51)
`Int. Cl.7 ..................................................... ..H04Q 7/20
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`(52) U.S.Cl.
`.................. ..455/452.2; 455/450; 455/452.1
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`(57)
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`ABSTRACT
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`Disclosed is a method for determining a data rate of a user
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`equipment (UE) for an enhanced uplink dedicated channel
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`(EUDCH) service by a Node B in a mobile communication
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`system having a radio network controller (RNC), the UE
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`transmitting UE transmission power class information to the
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`RNC; and the Node B having a table for storing total
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`transmission power corresponding to the transmission
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`power class, the Node B supporting the EUDCH service of
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`the UE. The method comprises receiving uplink channel
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`condition information of the UE from the UE, and receiving
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`UE transmission power class information from the RNC;
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`and reading total transmission power corresponding to the
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`received UE transmission power class from the table, and
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`determining a data rate of the UE considering the uplink
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`channel condition information and the total transmission
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`power.
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`701
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`HNC
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`706
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`UE CLASS
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`INFO
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`UE CAPABILITY
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`INFO
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`705
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 1 of 18
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`US 2004/0198369 A1
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`V1,,
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` @102
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`100
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`NODEB
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`1m
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`103
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`FIG.1
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`(PRIOR ART)
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 2 of 18
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`US 2004/0198369 A1
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`“E
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`203
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`-
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`.\'',+'
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`NODE
`‘ B
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`201
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`SCHEDULING INFORMATION
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`-
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`NODE B MONITORS UES
`SCHEDULING INFORMATION AND
`211
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`SCHEDULES UES
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`204
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`UE INDICATES TFRI FOR EACH
`EUDCH SUB-FRAME
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`TRANSMISSION
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`TFRI IS CHOSEN BASED ON
`ASSIGNED SCHEDULING
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`INFORMATION BY SERVING NODE B
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`206
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`TFRI (TRANSPORT FORMAT RESOURCE INDICATOR)
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`ACK/NACK IS SENT FOR
`EUDCFISUB-FRAME
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`TRANSMISSION.
`IF TFRI SUB-
`ERAMEOREuOcHsuR+RAME
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`BINERRORTHENNACKSENT
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`OTHERWISE ACK SENT
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`UL PACKET DATA TRANSMISSION USING EUDCH
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`207
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`208
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`FIG.2
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`(PRIOR ART)
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 3 of 18
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`US 2004/0198369 A1
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`301
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`RNC
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`

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`Patent Application Publication Oct. 7, 2004 Sheet 4 of 18
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`US 2004/0198369 A1
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`401
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`FIG.4
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 5 of 18
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`US 2004/0198369 A1
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`501
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`502
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`503
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`NODE B
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`UE CAPABILITY INFORMATION
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`UE CAPABILITY INFORMATION CC)NF|RM
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`505
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`FIG.5
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 6 of 18
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`US 2004/0198369 A1
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`601
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`602
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`UE POWER CLASS
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`603
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`NODE B
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`UE POWER CLASS CONFIRM
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`604
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`FIG.6A
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`611
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`612
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`UE MAX POWER
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`614
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`UE MAX POWER CONFIRM
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`FIG.6B
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 7 of 18
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`US 2004/0198369 A1
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`701
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`RNC
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`706
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`UE CLASS
`INFO
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`UE CAPABILITY
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`INFO
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`705
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`FIG.7
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 8 of 18
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`US 2004/0198369 A1
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`801
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`UE CAPABILITY
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`INFO
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`805
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`FIG.8
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 9 of 18
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`US 2004/0198369 A1
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`901
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`FIG.9
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`

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`Patent Application Publication Oct. 7, 2004 Sheet 10 of 18
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`US 2004/0198369 A1
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`1001
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`FIG. 10
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 11 of 18
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`US 2004/0198369 A1
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`1101
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`FIG.11
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 12 of 18
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`US 2004/0198369 A1
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`1201
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`POWER
`MARG|N
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`1204
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`FIG. 12
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 13 of 18
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`US 2004/0198369 A1
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`1301
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`1302
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`1303
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`NODE B
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`MAXIMUM ALLOWED UL TX POWER
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`MAXIMUM ALLOWED UL TX POWER CONFIRM 1305
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`FIG.13
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 14 of 18
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`US 2004/0198369 A1
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`1401
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`1402
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`MAXIMUM ALLOWED UL TX POWER
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`1403
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`1404
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`MAXIMUM ALLOWED UL TX POWER CONFIRM
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`FIG.14
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 15 of 18
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`US 2004/0198369 A1
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`1501
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`RNC
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`MAXIMUM
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`ALLOWED UL
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`TX POWER
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`1506
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`TX POWER
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`MAXIMUM
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`ALLOWED UL
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`FIG. 15
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 16 of 18
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`US 2004/0198369 A1
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`1601
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`1606
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`MAXIMUM ‘
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`ALLOWED UL
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`TX POWER
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`RNC
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`MAXIMUM
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`ALLOWED UL
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`TX POWER
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`1605
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`FIG.16
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 17 of 18
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`US 2004/0198369 A1
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`1701
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`RNC
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`1705
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`UE C,|ANPé°53ILlTY
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`1700
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`FIG. 17
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`Petitioner's Exhibit 1004
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`1707
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`UE CLASS INFO & ,
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`MAXIMUM
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`ALLOWED UL
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`TX POWER
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`Petitioner's Exhibit 1004
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`Patent Application Publication Oct. 7, 2004 Sheet 18 of 18
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`US 2004/0198369 A1
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`1801
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`1807
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`UE CLASS INFO &
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`MAXIMUM
`-ALLOWED UL
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`TX POWER
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`1806
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`“E C’|fiFAg'L'TY
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`1800
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`FIG.18
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`US 2004/0198369 A1
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`Oct. 7, 2004
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`UE 202 belongs. The Node B 201 and the UE 202 perform
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`EUDCH transmission/reception setup in step 203. The setup
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`process includes a process of delivering messages over a
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`dedicated transport channel. After EUDCH setup is per-
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`formed in step 203, the UE 202 sends scheduling informa-
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`tion to the Node B 201 in step 204. The scheduling infor-
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`mation sent in step 204 can include the UE’s transmission
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`power information from which uplink channel information
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`can be detected, the UE’s transmission power margin infor-
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`mation, or an amount of transmission data stored in a buffer
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`of the UE. The Node B 201, receiving the scheduling
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`information from a plurality of UEs, schedules the respec-
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`tive UEs while monitoring the scheduling information from
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`the UEs in step 211. A scheduling method can be dependent
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`upon the Node B 201, and a detailed description of the
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`scheduling method will now be described.
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`[0008] When the Node B 201 schedules the UE 202
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`according to the process of step 211,
`the Node B 201
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`transmits scheduling assignment information to the UE 202
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`in step 205. The UE 20 then transmits EUDCH using an
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`assigned data rate and transmission timing included in the
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`scheduling assignment information of step 205 in step 207.
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`Atransport format resource indicator (hereinafter referred to
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`as “TFRI”), which is resource information of EUDCH of
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`step 207, is transmitted to the Node B 201 together with
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`EUDCH of step 207,
`in step 206. After receiving the
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`channels of steps 206 and 207, the Node B 201 determines
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`whether there is an error in the TFRI of step 206 and the
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`EUDCH of step 207. If there is any error in either the TFRI
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`of step 206 or the EUDCH of step 207, the Node B 201
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`transmits NACK information to the UE 202 over an ACK/
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`NACK channel in step 208. However, if there is no error in
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`both the TFRI of step 206 and the EUDCH of step 207, the
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`Node B 201 transmits ACK information to the UE 202 over
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`the ACK/NACK channel in step 208.
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`[0009] Meanwhile, the Node B 201 determines a data rate
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`to be designated to the UE based on the scheduling infor-
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`mation received in step 204. In this process, the Node B
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`must assign a proper data rate and transmission timing to
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`several UEs using EUDCH, and resources must be assigned
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`to the UEs so that an uplink noise rise value should not
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`exceed a target noise rise value in the scheduling. Of course,
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`improvement of the entire system capability, more
`for
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`resources are assigned to a UE having a better channel
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`condition.
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`[0010] Herein, a description will be made of a procedure
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`for scheduling a UE by a Node B in transmitting and
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`receiving EUDCH. As described above, the Node B sched-
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`ules EUDCH transmission of several UEs so that a noise rise
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`value should not exceed a target noise rise value, and at the
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`same time, the Node B’s capacity should be maximized. The
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`Node B performs such scheduling using the scheduling
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`information received from respective UEs in step 204. The
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`scheduling information of step 204 can be used in the
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`following two methods.
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`[0011]
`In a first method, each UE notifies a Node B of its
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`transmission power value. Also, the UE can inform the Node
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`B of an amount (quantity size) of data stored in its buffer. In
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`this method, the Node B can estimate an uplink channel
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`condition in a situation that each UE faces, using transmis-
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`sion power of the UE, so it can assign proper resources to
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`each UE.
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`Petitioner's Exhibit 1004
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`METHOD FOR DETERMINING DATA RATE OF
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`USER EQUIPMENT SUPPORTING EUDCH
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`SERVICE
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`PRIORITY
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`[0001] This application claims priority under 35 U.S.C. §
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`119 to an application entitled “Method for Determining Data
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`Rate of User Equipment Supporting EUDCH Service” filed
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`in the Korean Intellectual Property Oflice on Jan. 4, 2003
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`and assigned Serial No. 2003-466, and an application
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`entitled “Method for Determining Data Rate of User Equip-
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`ment Supporting EUDCH Service” filed in the Korean
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`Intellectual Property Oflice on Dec. 18, 2003 and assigned
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`Serial No. 2003-93243, the contents of both of which are
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`incorporated herein by reference.
`BACKGROUND OF THE INVENTION
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`1. Field of the Invention
`[0002]
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`[0003] The present invention relates generally to a mobile
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`communication system supporting an enhanced uplink dedi-
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`cated channel (hereinafter referred to as “EUDCH”) service,
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`and in particular, to a method for determining a data rate for
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`an EUDCH service of a user equipment (UE) by a Node B
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`in performing control scheduling on the UE.
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`[0004]
`2. Description of the Related Art
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`[0005] The present invention is provided on the assump-
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`tion that an enhanced uplink dedicated channel (EUDCH) is
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`used in
`a wideband code division multiple
`access
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`(WCDMA) communication system. The EUDCH is a chan-
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`nel proposed to improve packet transmission capability for
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`uplink transmission in an asynchronous code division mul-
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`tiple access (CDMA) communication system. For
`the
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`EUDCH technology, new short transmission time interval
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`(TTI) technology can be used together with AMC (Adaptive
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`Modulation and Coding) and HARQ (Hybrid Automatic
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`Retransmission Request) used in existing HSDPA (High
`Speed Downlink Packet Access). The TTI can be defined as
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`a transmission unit for which one data block is transmitted
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`over a physical channel. In HSDPA, as scheduling of a
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`downlink channel
`is performed not by a radio network
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`controller (RNC) but by a Node B, scheduling of an uplink
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`channel is also performed by the Node B. Of course, Node
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`B’s uplink control scheduling is greatly different from Node
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`B’s downlink control scheduling.
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`[0006] FIG. 1 is a fundamental conceptual diagram illus-
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`trating a situation where EUDCH is used.
`In FIG. 1,
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`reference numeral 100 represents a Node B supporting
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`EUDCH, and reference numerals 101 to 104 represent user
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`equipments (UEs) transmitting EUDCH. The Node B 100
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`analyzes channel conditions of UEs that use the EUDCH,
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`and performs proper scheduling on each UE. The scheduling
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`is performed in such a manner that a low data rate is assigned
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`to a UE located far from the Node B and a high data rate is
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`assigned to a UE located close to the Node B as long as a
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`measured noise rise value of the Node B does not exceed a
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`target noise rise value, in order to increase the entire system
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`capability.
`[0007] A fundamental EUDCH transmission/reception
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`procedure will be described with reference to FIG. 2. FIG.
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`2 illustrates a transmission/reception procedure between a
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`UE 202 transmitting EUDCH and a Node B 201 to which the
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`Petitioner's Exhibit 1004
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`

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`US 2004/0198369 A1
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`Oct. 7, 2004
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`[0012] A detailed description of the method will now be
`made with reference to FIG. 1. In FIG. 1, the UEs 101 to 104
`are different from each other in distance from the Node B
`100, and the UE 101 is located closest to the Node B 101
`while the UE 104 is located farthest from the Node B 101.
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`In this case, the UE 101 has the lowest uplink channel power
`strength (represented by a thinnest arrow 111), and the UE
`104 has the highest uplink channel power strength (repre-
`sented by a thickest arrow 114). Therefore, as a method for
`obtaining the highest capability while maintaining the same
`measured noise rise value, scheduling is performed in such
`a manner that power strength should be in reverse proportion
`to a data rate. That is, scheduling is performed in such a
`manner that a UE located close to a Node B, like the UE 101,
`having low uplink transmission power is assigned the high-
`est data rate, while a UE located far from the Node B, like
`the UE 104, having high uplink transmission power is
`assigned the lowest data rate. Such a method is called
`“maximum CQI (Channel Quality Indicator) scheduling.”
`However, in this method, the Node B has no information on
`a transmission power margin available for each UE, increas-
`ing possibility that flexibility of scheduling will be lost.
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`[0013] That is, even though more resources are assigned to
`a UE having a good uplink channel environment,
`if a
`transmission power margin of the UE is not suflicient, the
`UE cannot sufficiently use the assigned resources. For
`example, since the UE is located close to the Node B 100,
`like the UE 101, it can transmit data at low uplink trans-
`mission power. In addition, although the UE can be assigned
`a relatively high data rate in transmitting data, if a trans-
`mission power margin of the UE is not sufficient, the UE, in
`some cases, cannot use maximum resources determined by
`the Node B 100. That is, as described above, since the Node
`B 100 does not have information on an available power
`margin of the UE 101, the Node B 100 cannot effectively
`determine how many resources it should assign to the UE
`101.
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`In a second method, a transmission power margin
`[0014]
`of a UE is determined with the scheduling information. A
`UE informs a Node B of its available power margin, and the
`Node B receiving the transmission power margins from
`several UEs assigns resources to the UEs through scheduling
`so as to efliciently increase cell capability.
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`[0015] However, in this method, the Node B cannot accu-
`rately detect a channel condition of each UE. That
`is,
`transmission power margin information that the UE sends to
`the Node B does not have uplink channel condition infor-
`mation of the UE. Therefore, the maximum CQI scheduling
`method that performs scheduling according to a channel
`condition cannot be used.
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`[0016] For example, according to this method, when a
`transmission power margin is transmitted from the UEs 101
`to 104 to the Node B 100, relatively many resources are
`assigned to a UE having a large power margin while
`relatively fewer resources are assigned to a UE having a
`small power margin. In this case, even the UE having a large
`power margin, when its channel environment is poor, cannot
`be sufliciently assigned as many resources as the value for
`which the power margin is considered. That is, even though
`sufficient resources as determined by the power margin are
`assigned, normal data transmission/reception becomes dif-
`ficult due to the poor channel environment, causing a
`reduction in channel capacity.
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`[0017] As described above, a Node B assigns resources to
`UEs that use EUDCH, through scheduling. The scheduling
`is performed using scheduling information delivered by a
`UE over an uplink. The above-stated two proposed conven-
`tional methods lack information for optimized scheduling.
`Accordingly, there is a demand for a method for maximizing
`system capability by efliciently performing scheduling in
`which the Node B assigns resources to UEs that use
`EUDCH.
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`SUMMARY OF THE INVENTION
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`It is, therefore, an object of the present invention to
`[0018]
`provide a method for signaling scheduling information
`required in performing control scheduling on UEs support-
`ing an enhanced uplink dedicated channel (EUDCH), to a
`Node B by a UE and a radio network controller.
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`To achieve the above and other objects, there is
`[0019]
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
`(EUDCH) service by a Node B in a mobile communication
`system having a radio network controller (RNC), the UE
`transmitting UE transmission power class information to the
`RNC, and the Node B having a table for storing total
`transmission power corresponding to the transmission
`power class, the Node B supporting the EUDCH service of
`the UE. The method comprises the steps of receiving at the
`Node B uplink channel condition information of the UE
`from the UE, and receiving at the Node B UE transmission
`power class information from the RNC, and reading total
`transmission power corresponding to the received UE trans-
`mission power class from the table, and determining a data
`rate of the UE considering the uplink channel condition
`information and the total transmission power.
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`[0020] Preferably, the uplink channel condition informa-
`tion of the UE is transmission power information of the UE.
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`[0021] Further, the method comprises the step of calcu-
`lating transmission power margin information of the UE
`using the total transmission power and the transmission
`power information, and determining a data rate of the UE
`considering the transmission power information and the
`transmission power margin information.
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`To achieve the above and other objects, there is
`[0022]
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
`(EUDCH) service by a Node B in a mobile communication
`system having a radio network controller (RNC), the UE
`transmitting UE transmission power class information to the
`RNC, and the Node B having a table for storing total
`transmission power corresponding to the transmission
`power class, the Node B supporting the EUDCH service of
`the UE. The method comprises the steps of receiving at the
`Node B transmission power margin information of the UE
`from the UE, and receiving at the Node B UE transmission
`power class information from the RNC, and reading total
`transmission power corresponding to the received UE trans-
`mission power class from the table, and determining a data
`rate of the UE considering the transmission power margin
`information and the total transmission power.
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`To achieve the above and other objects, there is
`[0023]
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
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`Petitioner's Exhibit 1004
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`Petitioner's Exhibit 1004
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`

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`US 2004/0198369 A1
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`Oct. 7, 2004
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`(EUDCH) service by a Node B in a mobile communication
`system having the UE and the Node B having a table for
`storing total transmission power corresponding to a trans-
`mission power class of the UE, the Node B supporting the
`EUDCH service of the UE. The method comprises the steps
`of receiving at the Node B uplink channel condition infor-
`mation of the UE and UE transmission power class infor-
`mation from the UE; and reading total transmission power
`corresponding to the received UE transmission power class
`from the table, and determining a data rate of the UE
`considering the uplink channel condition information and
`the total transmission power.
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`[0024] Preferably, the uplink channel condition informa-
`tion of the UE is transmission power information of the UE.
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`[0025] Further, the method comprises the step of calcu-
`lating transmission power margin information of the UE
`using the total
`transmission power and the transmission
`power information, and determining a data rate of the UE
`considering the transmission power information and the
`transmission power margin information.
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`[0026] To achieve the above and other objects, there is
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
`(EUDCH) service by a Node B in a mobile communication
`system having the UE and the Node B having a table for
`storing total transmission power corresponding to a trans-
`mission power class of the UE, the Node B supporting the
`EUDCH service of the UE. The method comprises the steps
`of receiving at
`the Node B transmission power margin
`information of the UE and UE transmission power class
`information from the UE; and reading total transmission
`power corresponding to the received UE transmission power
`class from the table, and determining a data rate of the UE
`considering the transmission power margin information and
`the total transmission power.
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`[0027] To achieve the above and other objects, there is
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
`(EUDCH) service by a Node B in a mobile communication
`system having the UE transmitting UE transmission power
`class information to a radio network controller (RNC), the
`RNC having a table for storing total transmission power
`corresponding to a transmission power class of the UE, and
`the Node B supporting the EUDCH service of the UE. The
`method comprises the steps of receiving at
`the Node B
`uplink channel condition information of the UE from the
`UE, and receiving total transmission power of the UE from
`the RNC; and determining a data rate of the UE considering
`the received uplink channel condition information and total
`transmission power.
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`[0028] Preferably, the uplink channel condition informa-
`tion of the UE is transmission power information of the UE.
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`[0029] Further, the method comprises the step of calcu-
`lating transmission power margin information of the UE
`using the total
`transmission power and the transmission
`power information, and determining a data rate of the UE
`considering the transmission power information and the
`transmission power margin information.
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`(EUDCH) service by a Node B in a mobile communication
`system having the UE transmitting UE transmission power
`class information to a radio network controller (RNC), the
`RNC having a table for storing total transmission power
`corresponding to a transmission class of the UE, the Node B
`supporting the EUDCH service of the UE. The method
`comprises the steps of receiving at the Node B transmission
`power margin information of the UE from the UE, receiving
`at the Node B total transmission power from the RNC; and
`determining a data rate of the UE considering the transmis-
`sion power margin information and the total transmission
`power.
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`To achieve the above and other objects, there is
`[0031]
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
`(EUDCH) service by a Node B in a mobile communication
`system having the UE and the Node B supporting the
`EUDCH service of the UE. The method comprises the steps
`of receiving at the Node B transmission power information
`and transmission power margin information of the UE from
`the UE; and determining a data rate of the UE considering
`the transmission power information and the transmission
`power margin information.
`BRIEF DESCRIPTION OF THE DRAWINGS
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`[0032] The above and other objects, features and advan-
`tages of the present invention will become more apparent
`from the following detailed description when taken in con-
`junction with the accompanying drawings in which:
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`[0033] FIG. 1 is a diagram schematically illustrating a
`situation using EUDCH;
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`[0034] FIG. 2 is a diagram illustrating a fundamental
`procedure for transmitting and receiving EUDCH;
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`[0035] FIG. 3 is a diagram illustrating a fundamental
`configuration of a WCDMA radio access system;
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`[0036] FIG. 4 is a diagram illustrating a system configu-
`ration according to a first embodiment of the present inven-
`tion;
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`[0037] FIG. 5 is a diagram illustrating a procedure for
`signaling existing UE capability information through an
`RRC message;
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`[0038] FIGS. 6A and 6B are diagrams illustrating Node B
`application part (NBAP) signaling procedures through Iub
`connection proposed by the present invention;
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`[0039] FIG. 7 is a diagram illustrating a system configu-
`ration according to a second embodiment of the present
`invention;
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`[0040] FIG. 8 is a diagram illustrating a system configu-
`ration according to a third embodiment of the present
`invention;
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`[0041] FIG. 9 is a diagram illustrating a system configu-
`ration according to a fourth embodiment of the present
`invention;
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`[0042] FIG. 10 is a diagram illustrating a system configu-
`ration according to a fifth embodiment of the present inven-
`tion;
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`[0030] To achieve the above and other objects, there is
`provided a method for determining a data rate of a user
`equipment (UE) for an enhanced uplink dedicated channel
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`[0043] FIG. 11 is a diagram illustrating a system configu-
`ration according to a sixth embodiment of the present
`invention;
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`Petitioner's Exhibit I004
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`Petitioner's Exhibit 1004
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`

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`US 2004/0198369 A1
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`Oct. 7, 2004
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`[0044] FIG. 12 is a diagram illustrating a system configu-
`ration according to a seventh embodiment of the present
`invention;
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`UEs. The resources include a resource regarding how long
`the transmission will be permitted, and a resource regarding
`which data rate will be assigned.
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`[0045] FIG. 13 is a diagram illustrating a procedure for
`signaling maximum allowed uplink transmission power
`information through a radio resource control (RRC) message
`according to another embodiment of the present invention;
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`[0046] FIG. 14 is a diagram illustrating an NBAP signal-
`ing procedure through Iub connection according to another
`embodiment of the present invention;
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`[0047] FIG. 15 is a diagram illustrating a system confir-
`mation according to an eighth embodiment of the present
`invention;
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`[0048] FIG. 16 is a diagram illustrating a system confir-
`mation according to a ninth embodiment of the present
`invention;
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`[0049] FIG. 17 is a diagram illustrating a system confir-
`mation according to a tenth embodiment of the present
`invention; and
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`[0050] FIG. 18 is a diagram illustrating a system confir-
`mation according to an eleventh embodiment of the present
`invention.
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`DETAILED DESCRIPTION OF THE
`PREFERRED EMBODIMENT
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`[0051] Several preferred embodiments of the present
`invention will now be described in detail with reference to
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`the annexed drawings. In the drawings, the same or similar
`elements are denoted by the same reference numerals even
`though they are depicted in different drawings.
`In the
`following description, a detailed description of known func-
`tions and configurations incorporated herein has been omit-
`ted for conciseness.
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`[0052] The present invention is provided on the assump-
`tion that an enhanced uplink dedicated channel (EUDCH) is
`used in
`a wideband code division multiple
`access
`(WCDMA)
`communication system. The EUDCH,
`as
`described in the related art section,
`is characterized by
`HARQ, AMC, Node B scheduling, short TTI length, etc.
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`[0053] The present invention is applied to a system sup-
`porting Node B control scheduling and short TTI length
`among new technologies applied to the EUDCH. The “short
`TTI length” means using TTI having a shorter length such
`as 2 ms and 3.33 ms, compared with existing dedicated data
`channel’s TTI having a length of a minimum of 10 ms. A
`decrease in length of TTI means that a transmission data
`block, i.e., a transmission data unit, becomes shortened. If
`the transmission data unit becomes shortened, a scheduling
`period should also be shortened proportionally. As a result,
`this is suitable to scheduling by a Node B. Of course, the
`present invention can be applied in the same way even in an
`environment where the existing 10 ms TTI is used.
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`[0054] The “Node B scheduling,” as descried in the
`related art section, means scheduling an uplink packet
`channel by a Node B. In other words, the Node B estimates
`transmission situations or channel conditions of several UEs
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`In performing scheduling, the Node B needs infor-
`[0055]
`mation on a transmission power margin of a UE, an amount
`of data stored in a buffer of the UE, or an uplink channel
`condition of the UE. As indicated as a disadvantage in the
`related art section,
`if the Node B has information on a
`transmission power margin of a UE but has no uplink
`channel condition information of the UE,
`its scheduling
`performance is decreased. In contrast, even when the Node
`B has the uplink channel condition information of the UE
`but has no information on a transmission power margin of
`the UE, its scheduling performance is decreas